JEE Main MCQ & Objective Questions

The JEE Main exam is a crucial step for students aspiring to enter prestigious engineering colleges in India. It tests not only knowledge but also the ability to apply concepts effectively. Practicing MCQs and objective questions is essential for scoring better, as it helps in familiarizing students with the exam pattern and enhances their problem-solving skills. Engaging with practice questions allows students to identify important questions and strengthen their exam preparation.

What You Will Practise Here

  • Fundamental concepts of Physics, Chemistry, and Mathematics
  • Key formulas and their applications in problem-solving
  • Important definitions and theories relevant to JEE Main
  • Diagrams and graphical representations for better understanding
  • Numerical problems and their step-by-step solutions
  • Previous years' JEE Main questions for real exam experience
  • Time management strategies while solving MCQs

Exam Relevance

The topics covered in JEE Main are not only significant for the JEE exam but also appear in various CBSE and State Board examinations. Many concepts are shared with the NEET syllabus, making them relevant across multiple competitive exams. Common question patterns include conceptual applications, numerical problems, and theoretical questions that assess a student's understanding of core subjects.

Common Mistakes Students Make

  • Misinterpreting the question stem, leading to incorrect answers
  • Neglecting units in numerical problems, which can change the outcome
  • Overlooking negative marking and not managing time effectively
  • Relying too heavily on rote memorization instead of understanding concepts
  • Failing to review and analyze mistakes from practice tests

FAQs

Question: How can I improve my speed in solving JEE Main MCQ questions?
Answer: Regular practice with timed quizzes and focusing on shortcuts can significantly enhance your speed.

Question: Are the JEE Main objective questions similar to previous years' papers?
Answer: Yes, many questions are based on previous years' patterns, so practicing them can be beneficial.

Question: What is the best way to approach JEE Main practice questions?
Answer: Start with understanding the concepts, then attempt practice questions, and finally review your answers to learn from mistakes.

Now is the time to take charge of your preparation! Dive into solving JEE Main MCQs and practice questions to test your understanding and boost your confidence for the exam.

Q. What is the effect of increasing the radius of a spherical Gaussian surface enclosing a fixed charge?
  • A. Electric field increases.
  • B. Electric field decreases.
  • C. Electric field remains constant.
  • D. Electric field becomes zero.
Q. What is the effect of increasing the resistance in a series AC circuit?
  • A. Increases current
  • B. Decreases current
  • C. No effect
  • D. Increases voltage
Q. What is the effect of increasing the resistance in a series RLC circuit on the Q factor?
  • A. Increases Q factor
  • B. Decreases Q factor
  • C. No effect
  • D. Doubles Q factor
Q. What is the effect of increasing the resistance in an AC circuit on the overall current?
  • A. Increases current
  • B. Decreases current
  • C. No effect
  • D. Doubles current
Q. What is the effect of increasing the resistance in the circuit of a potentiometer?
  • A. Increases the current
  • B. Decreases the current
  • C. No effect on current
  • D. Increases the emf
Q. What is the effect of increasing the resistance of the potentiometer wire on the potential gradient?
  • A. It increases the potential gradient
  • B. It decreases the potential gradient
  • C. It has no effect
  • D. It depends on the voltage applied
Q. What is the effect of increasing the size of the halogen atom on the reactivity of haloalkanes?
  • A. Increases reactivity
  • B. Decreases reactivity
  • C. No effect
  • D. Depends on the solvent
Q. What is the effect of increasing the size of the halogen in haloalkanes on the bond strength?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Varies randomly
Q. What is the effect of increasing the slit width in a double-slit experiment on the interference pattern?
  • A. Fringe width increases
  • B. Fringe width decreases
  • C. Fringe visibility increases
  • D. Fringe visibility decreases
Q. What is the effect of increasing the slit width in single-slit diffraction?
  • A. Increases the width of the central maximum
  • B. Decreases the width of the central maximum
  • C. No effect on the central maximum
  • D. Increases the intensity of the central maximum
Q. What is the effect of increasing the speed of a charged particle moving in a magnetic field?
  • A. Increases the magnetic force
  • B. Decreases the magnetic force
  • C. No effect on the magnetic force
  • D. Reverses the direction of the force
Q. What is the effect of increasing the speed of a conductor moving through a magnetic field on the induced EMF?
  • A. Increases the induced EMF
  • B. Decreases the induced EMF
  • C. No effect on the induced EMF
  • D. Induced EMF becomes zero
Q. What is the effect of increasing the speed of a magnet moving through a coil?
  • A. Induced current decreases
  • B. Induced current increases
  • C. No change in induced current
  • D. Induced current becomes zero
Q. What is the effect of increasing the steric hindrance on the reactivity of aldehydes and ketones?
  • A. Increases reactivity
  • B. Decreases reactivity
  • C. No effect
  • D. Reactivity depends on solvent
Q. What is the effect of increasing the surface area of an object on its rate of heat transfer?
  • A. Increases
  • B. Decreases
  • C. No effect
  • D. Depends on the material
Q. What is the effect of increasing the surface area of an object on its rate of heat transfer by radiation?
  • A. Decreases
  • B. Increases
  • C. Remains constant
  • D. Becomes zero
Q. What is the effect of increasing the surface charge density on the electric field of a charged plane sheet?
  • A. Increases
  • B. Decreases
  • C. No effect
  • D. Becomes zero
Q. What is the effect of increasing the surface roughness on the coefficient of friction?
  • A. Increases
  • B. Decreases
  • C. No effect
  • D. Depends on the material
Q. What is the effect of increasing the temperature of a gas at constant volume?
  • A. Pressure decreases
  • B. Pressure increases
  • C. Volume increases
  • D. Density increases
Q. What is the effect of increasing the temperature of a gas on its pressure, assuming volume is constant?
  • A. Pressure decreases
  • B. Pressure increases
  • C. Pressure remains constant
  • D. Pressure becomes zero
Q. What is the effect of increasing the temperature of a gas on the speed of sound in that gas?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Depends on pressure
Q. What is the effect of increasing the temperature on the average speed of gas molecules?
  • A. Average speed decreases
  • B. Average speed remains constant
  • C. Average speed increases
  • D. Average speed becomes zero
Q. What is the effect of increasing the temperature on the density of most liquids?
  • A. Increases density
  • B. Decreases density
  • C. No effect
  • D. Depends on the liquid
Q. What is the effect of increasing the temperature on the distribution of molecular speeds in a gas?
  • A. The distribution becomes narrower
  • B. The distribution becomes wider
  • C. The distribution remains unchanged
  • D. The average speed decreases
Q. What is the effect of increasing the temperature on the equilibrium constant of an exothermic reaction?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Depends on the reaction
Q. What is the effect of increasing the temperature on the refractive index of a medium?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Depends on the medium
Q. What is the effect of increasing the temperature on the resistance of a conductor?
  • A. Resistance decreases
  • B. Resistance increases
  • C. Resistance remains constant
  • D. Resistance fluctuates
Q. What is the effect of increasing the temperature on the resistance of the potentiometer wire?
  • A. Resistance decreases
  • B. Resistance increases
  • C. Resistance remains constant
  • D. Resistance fluctuates
Q. What is the effect of increasing the temperature on the RMS speed of a gas?
  • A. Increases
  • B. Decreases
  • C. Remains constant
  • D. Depends on pressure
Q. What is the effect of increasing the temperature on the speed of gas molecules?
  • A. Speed decreases
  • B. Speed remains constant
  • C. Speed increases
  • D. Speed becomes zero
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